<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../../s/bootstrap/3.3.7/css/bootstrap.min.css">
<style type="text/css">
.bg-red {
	background-color: red;
}

.bg-green {
	background-color: green;
}

.bg-blue {
	background-color: blue;
}
</style>
</head>
<body>
	<div class="container">
		<div class="row">
			<div class="col-md-4 bg-red">(1)</div>
			<div class="col-md-8 ">
				<div class="row">
					<div class="col-md-4 bg-green">(2)</div>
					<div class="col-md-8 bg-blue">(3)</div>
				</div>
			</div>
		</div>
	</div>
</body>
</html>